Paper-making machine.



T. H. SAVERY, JR.

PAPER MAKING MACHINE.

APPLICATION FILED was 30. 1914.

1,178,183. I Patent-ed Apr. 4,1916,

UNITED STATES THOMAS H. SAVERY, JR, 0]? SANDUSKY, OHIO.

PAPER-MAKING MACHINE.

drawings, forming a part of the same.

The object of the present invention is to avoid the marking of paper bythe suction openings in paper making machinery employing suction rollsin combination wlth press rolls for extracting water and moisture fromthe paper pulp.

It is found in practice that the paper is marked to correspond with thesuction openings, the parts of the paper opposite the openings differingin color or shade from the parts opposite the solid portions or Wallssurrounding these openings. I have discovered that, if a top Wire orfelt be used above the pulp between the suction roll and press roll, inaddition to the bottom wire or felt heretofore employed, this marking ofthe paper by the suction is entirely avoided, the pressure and suctionefi'ect apparently being distributed over the paper by the top wire orfelt so as to produce a more uniform action and avoid the usual marking.

In the accompanying drawing forming a part of this specification, I haveshown for purpose of illustration my invention as applied in a preferredform in connection with a paper making machine of the Fourdrinler type,and from this illustration the applica tion of the invention to othertypes of paper making machines will be readily understood.

The drawing is a diagrammatic View of a.

portion of the Fourdrinier paper making machine with my invention, oneof the suction rolls being in section to show the suction,

openings.

Referring to the drawing, a is the suction couch roll from which thepulp web as received from the Fourdrinier wire 12 passes to the bottomfelt c on which the pulp web passes to first and second presses,consisting respectively of suction and press rolls 0!, e,

Specification of Letters Patent.

Patented Apr. 4, 1916.

Application filed June 30, 1914. Serial No. 848,124.

and f, g, the web w passing from the second suction press to thereceiving drier h, all as common in this type of paper making machines.The suction rolls cl, 7, may be'of any suitable construction andoperated in any suitable manner, for instance, as fully shown anddescribed in Letters Patent to Millspaugh No. 895,283, No. 994,862, andNo.

1,025,822, and the press rolls may be of metal, rubber or other suitablematerial, as desired.

In'accordance with my invention, I employ, for avoiding the marking ofthe paper by the suction, a top wire or felt is, which passes with thepulp web as and bottom wire or felt 0 between the suction and pressrolls, preferably between both pairs of rolls and leaving the web at thesecond press roll as usual with the bottom felt. This top wire or feltmay be of any suitable construction and arranged and driven in anysuitable manner. It will be understood that wire or felt will be used asdesired, in accordance with the product desired, as is usual in papermaking machines.

What I claim is:

1. In a paper making machine, the combination'with the press roll andcotiperating suction roll of the press portion of the machine, and apaper carrying wire or felt between the paper and suction roll, of awire or felt between the paper and press roll passing with the paper andcarrving wire or felt between the suction roll and press roll.

2. The combination with a plurality of suction rolls andtheir'corresponding press rolls, the press rolls being arranged abovethe suction rolls and bottom wire or felt of a paper making machine, ofa wire or felt above the paper passing with the paper and bottom wire orfelt between each of the plurality of press rolls and suction rolls.

In testimony whereof, I have hereunto set my hand, in the presence oftwo subscribing witnesses.

THOMAS H. SAVERY, JR.

Witnesses:

Tnos. M. TULLEY, JAMES WEBB.

